Rotary pump, &amp;c.



H. BROUSSEAU.

ROTARY PUMP, 6w.

APPLIOATION FILED AUG. 14, 1012.

1,128,579, Patented Feb. 16, 1915.

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APPLION'BTON FILED AUG. 14, 1 012.

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UNITED STATES PATENT- OFFICE.

HARRY BBOUSSEAU, OF NEW YORK, N. Y.

ROTARY PUMP, &c.

To all whom it may concern.-

Be it known that I, HARRY BROUSSEAU, a citizen of the United States, anda resident of New York, borough of Brooklyn, county of Kings, and Stateof New York, have invented certain new and useful Improvements in RotaryPumps, &c., of which the following is a full, clear, and exactdescription.

This invention relates more particularly to rotary, pumps having aplurality of cylinders in each of which a piston is adapted to move.

One of the important objects of the invention is to provide a pluralityof cylinders mounted to rotate with a shaft, and a second rotary shaftto which the pistons of the cylinders are connected and which iseccentrically arranged with respect to the firstmentioned shaft so thatduring the rotation of the shafts a relative movement is impartedbetween the pistons and cylinders to cause a relative reciprocatorymovement, and in such a way that the rods connected to the pistons maybe mounted upon independent pins and in vertical ,alinement 'thussimplifying the construction of such pumps as ordinarily constructed andovercoming the necessity of connecting all the pistons to a singlestationary crank pin.

Other objects of the invention are to provide a plurality of cylindershaving a common head and having openings in said head of a smaller sizethan the cylinders to cause the water in passing through the openings tooffer sufficient resistance to force the cylinders and shaft whichcarries the cylinders toward the discharge side of the casing in orderto prevent leakage and to avoid the necessity of having a packing atthis point; and to provide a simple and eflicient pump in which a pumprunner is provided with curved wings or vanes and which is adapted tocounteract the centrifugal force due to the rotary motion of thecylinders which tends to force the water outward, the said runnerserving to draw the water through the inlet and to deliver the same tothe cylinders.

A further object of the invention is to provide a connection between oneside of the casin and the suction side thereof so Specification ofLetters Patent.

/ Patented Feb. 16, 1915.

Application filed August 14, 1912. Serial No. 715,053.

that any'leakage occurring in the casing on one side thereof may bewithdrawn to the other side.

A still further object of the invention is to provide a pump in whichthe rotary parts of the invention are substantially balanced so as tohave an easy and uniform movement.

A still further object of the invention is to provlde a pump inwhichpractically n0 packing and valves are required between the severalwearing parts, and which parts may be operated by belt, motor, or otherdriving means. With these and other objects in view, the invention willbe hereinafter more particularly described with reference to theaccompanying drawings, which form a part of this specification, and willthen be pointed out in the claims at the end of the description.

In the drawings, Figure 1 is a longitudinal section, partly inelevation, of one form of pump embodying my invention. Fig. 2 is anelevation, partly in section, of the pump follower or runner andthe-cylinder casing. Fig. 3 is a detail view of the annular cvlinderhead. Fig. 4. is a vertical seetion, taken on the line IVIV of Fig. 1;and Fig. 5 is a detailelevation of the pump runner.

- While I show and describe the invention as applied to rotary pumps, itwill be understood that some of the parts may be used and the inventionso modified as to adapt the same for rotary engines, air compressors,and the like, and that while the rods connecting the pistons to one ofthe shafts areshown as each arrangedupon an independent pin, it will beunderstood that where two or three cylinders are used, for example, therods may be held directly on the end of the shaft without departing fromthe character of the invention.

The casing 10 has a base 11 to which; a boss 12 is connected by an upriht 13. The boss 12 has a bushing 14 which orms a bearing for a shaft 15,which latter shaft may have a pulley to be driven by a belt, or saidshaft may be operated by an electric motor or in any other desired way.A pin disk 16 is held to the shaft and projecting from said disk is anarm 17 which 15 connected by a link 18 to the cylinder casing 19, thelatter forming a part of a pump runner or member 20 and rotating withsaid flange which may be rigidly secured to a flange 26 of the pumpcasing, and on the inner surface thereof may be inclined or conical, asat 27. The runner 20 and lts shaft 21 is held against len thwise move--ment in the bushing 22 by a co lar 29 secured on the outer end of theshaft 21, the said collar being inclosed'within a cap 30 which has athreaded portion adapted to engage a threaded end of the casinghead-boss 23.

A plurality of pistons 31 are adapted to work in a corresponding number,of cylinders 32. These cylinders 32 form a part of the cylinder casing19 and are radially arranged about the runner 20. A ring 33. is arrangedaround the outer ends of the cylinders and forms a head for saidcylinders. The cylinder casing 19 with the cylinders form substantiallyan annular body and has the central portion cut-away to ad'aptthe pindisk 16 to project within the same, and arranged on the in disk are aplurality of pins 34 arranged circumferentially about the shaft 15, saidpins having their outer ends held in a disk 35. There aresix cylindersshown though this number may vary,

and each cylinder has its iston 31. Each piston 31 is hollow and as apin 36 to which one end of the connectin rod or link 37 is held, theother end of sa d rod being connected to its corresponding pin 34. Theshafts 15 and 21 are eccentrically arranged with respect to each otherand are off-center or eccentric to the extent of substantially.

one-half of the stroke of the pistons. It will be evident that bfyreason of the link 18. connecting the shat 15 to cylinder casing 19 thatthe two shafts 15 and 21 will rotate in'unjson, and that by reasonv ofthe eccentric arrangement of said shafts, the pistons will bereciprocated withinthe cylinders during such rotary movement.

. The'casing 10 is provided with an intake or inlet 38 and a discharge39. The intake end of the casing is connected to substantially one-halfof the cylinders at the lower part of the casing so 'as to takeinsimultaneously three of thecylinders, and the discharge connects by anenlarged and tubular'part 40 with three of the discharging cylinders. Asthe pistons are reciprocated, as already explained, the water or otherliquid or material will pass from the intake to the three lower cyhndersand drawn therein during the rotary movement of the shafts 15 and 21, atwhich time the pistons of the three upper cylinders will be moved todischarge the material or liquid from said ,upper cylinders into theenlarged part 40 and to and through the dischar e 39. The rotarymovement of the cy inders will have a tendency to throw the wateroutward owing to their speed and to centrifugal force, and such actionof the cylinders. is counteracted by the pump runner or member 20. Thepump runner 20 has aplurality of vanes or wings 41 which are so arrangedthat during the rotary movement of the runner the water will be drawnfrom the intake and delivered to the cylinders in such a way as tocounteract the centrifugal force of the cylinders to force the wateroutward.

The cylinder head 33 has slots 42 substantially less in area than thearea of the cylinders, so that during the discharge of the cylinders thesaid slots will offer resistance to the discharge of the water, and suchresistance will lift the head and cylinder casing toward and force thehead against that end of the pump casing 10, thereby preventing leakageand compensating for any wear that might occur at the discharge side ofthe casing should any leakage occur between the cylinder head 33 and theouter periphery of the runner by reason of said head being forcedagainst the surface of the outer stationary casing, such leakage wouldbe back to the intake side and would not interfere with the properoperation of the pump. The construction just referred to is designed toreduce leakage in the discharge or pressure side of the pump.

If leakage should occur from the intake side of the casing to thesidej43 of said casing, a pressure might be created therein sufiicientto force the face 28 of the runner hard against the inclined or conicalface 27 of the head 24 and be otherwise objectionable. To avoid this, api e 44 has one end connected to the part 43 o the casing on theopposite side ofthe cylinders and this pipe has its other end connectedto the intake portion so that during the action of the pistons any wateror other fluid or material that might pass to the side 43 of the casingis withdrawn therefrom and forced by the pistons into the discharge.

From the foregoing, it will be seen that a simple and efiicient pum isprovided in which the cylindcrs'and t e means for operatin the pistonsare 'eccentrically arrange with respect to each other to cause arelative movement during the rotary movement of the pistons andcylinders; that simple means is provided to-prevent leakage; that simpleand efiicier means is rovided whereby the centrifugal action 0 thecylinders is counteracted; that said pump is simple in construction andthe parts so arelongated inlet. and discharge openings, at

rotary cylinder casing having a plurality of radially arrangedcylinders, a runner having blades and counteracting the centrifugaleffect of the cylinders, a shaft to which the runner is held, a pistonfor each cylinder, a second'shaft eccentrically arranged with respect tothe first-mentioned shaft, connections between the second shaft and thepistons, and means for operatively connect ing the shafts to rotate inunison. Y

2. The combination of a rotary cylinder casing having a plurality ofcylinders, a,

member rotating with the cylinders and having means to create suctionand to deliver water to said cylinders to counteract the centrifugaleffect of the cylinders, a shaft to which the member is held, a pistonfor each cylinder, a shaft eccentrically arranged with respect to thefirst-mentioned shaft, and connections between the second shaft and thepistons.

3. The combination of a casing having elongated inlet and dischargeopenings, a rotary cylinder casing having a plurality of radiallyarranged cylinders, rotary means for counteracting the centrifugaleffect of the cylinders, a shaft rotatable with the rotary .means andthe cylinders, a piston for each cylinder, a shaft eccentricallyarranged with respect to the first-mentioned shaft, connections betweenthe second shaft and the pistons, and means for operating the shafts inunison.

4. The combination of a casing having inlet and discharge openings, arotary cylinder casing having a plurality of radially arrangedcylinders, a runner havmg means to deliver water to the cylinders tocounteract the centrifugal effect of the cylinders, a shaft to which therunner is held, a piston for each cylinder, a second shaft eccentricallyarranged with respect to the first-mentioned shaft, rods connecting thesecond shaft and the pistons, and means for rotating the shafts inunison.

5. The combination of a casing having inlet and discharge openings,arotary cyl inder, a piston held to reciprocate in the cylinder, andpumping means-discharging into the cylinders for counteracting thecentrifugal effect of the cylinder.

6. In a rotary pump, the combination of a plurality-of cylinders, apiston for each cylinder, rotary shafts connected to the pistons andcylinders and eccentrically ar ranged with respect to each other, acasing inclosing the cylinders and having inlet and discharge openingsand having chamberson opposite sides of the cylinders, a connectlon fromone side' of the casing to the other to "withdraw any leakage from oneside of the each cylinder, shafts connected to the pistons andcylinders, a casing inclosing the cylinders and having'inlet anddischarge openings and having chambers on opposite sides of thecylinders, a connection from one side of the casing to the other towithdraw any leakage from one side of the casing to the other, and apump runner for delivering water to the cylinders and counteracting thecentrifugal effect of the cylinders during the rotation thereof.

8. In a rotary pump, the combination of a casing, aplurality ofcylinders arranged within the casing, a plurality of pistons, shaftseccentrically arranged with respect to each other and connected to thepistons and cylinders, means for rotating the shafts, cylinders andpistons in unison, and a' cylinder head for the cylinders havingelongated openings of less area than the cylinders to cause the head tobe forced to one side against the casing to prevent leakage.

9. The combination of a casing, a plurality of cylinders arranged Withinthe casing, a plurality of pistons, shafts eccentrically arranged withrespect to each other and connected to the pistons and cylinders, meansfor rotating the shafts in unison, and an annular cylinder head for thecylinders having openings of less area than the cylinders to cause thehead to be forced to one side against the casing to prevent leakage.

10. The combination of a casing, a plurality of rotary cylindersarranged within the casmg, an annular head for all the cylinders, aplurality of pistons one for each cylinder, shafts eccentricallyarranged with respect to each other and connected to the pistons andcylinders and to rotate therewith, and means whereby the head andcylinders may be forced to one side against the casing to preventleakage.

11. The combination of a plurality of rotary cylinders, pistonsrelatively movablein said cylinders, a shaft operatively connected tothe pistons, a pump runner, a shaft eccentrically arranged with 'respectto the first-mentioned shaft and connected to said runner to rotatetherewith, and means for rotating the cylinders and runner in unison andboth acting to cause the water to flow into the cylinders.

12. The combination of rotary means including a plurality of cylinders,pistons movable in said cylinders, means whereby magma the pistons maybemdved relatiyely with I This-s ecifica'tion signed and witnessedrespect to the cylinders, and an element havthis twel th day of Au st A.D. 1912.

ing means to draw and force watenand to HARR BROUSSEAU. deliver the sameto the cylinders and to, Witnesses: ,5 counteract the centrifugal actionof said 03 1- L. I. MAYER,

inders. LESTER C.- TAYLOR.

